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Oscillatory shear flow of nematic liquid crystals

 

作者: Wesley R. Burghardt,  

 

期刊: Journal of Rheology  (AIP Available online 1991)
卷期: Volume 35, issue 1  

页码: 49-62

 

ISSN:0148-6055

 

年代: 1991

 

DOI:10.1122/1.550208

 

出版商: The Society of Rheology

 

关键词: Liquid crystals;Frank elasticity effects, liquid crystals;SHEAR FLOW;NEMATIC CRYSTALS;OSCILLATIONS;POLYMERS;VISCOELASTICITY

 

数据来源: AIP

 

摘要:

The response of a nematic liquid crystal to oscillating shear flow has been calculated. In both low and high frequency limits, the macroscopic response is dominated by viscous effects, under the influence of dominant boundary‐induced and hydrodynamic torques, respectively. At intermediate frequencies, distortional (Frank) elasticity lends the macroscopic response viscoelastic character, exhibiting a significant effective storage modulus. The possible influence of distortional elasticity on the oscillatory response of liquid crystal polymers is qualitatively discussed.

 

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